A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6135-01-041-3829
NSN 6130-00-971-1651
NSN 6220-01-274-0583
NSN 5945-01-414-3878
NSN 5895-01-332-0402
NSN 6610-01-391-6781
NSN 5920-01-468-5911
NSN 5965-01-369-8016
NSN 5920-01-023-6818
NSN 6150-01-113-8553
NSN 5945-01-206-9421
NSN 5905-01-417-1005